Since you're talking about Germany: Tofu has been unfairly demonized here (maybe because it can serve as a meat substitute).
It is a great source of nutrients and protein. It can be prepared in many different ways. It is environmentally friendly, can be conveniently stored and has a relatively long shelf life.
Most of the experience, including your examples, is not specific to Germany. The notion that tofu is not for "real men" can be seen in other meat-heavy societies. Just like the idea that tofu is not a filling meal. In pop culture, it is often associated with weak traits (e.g. "soy boy"), and described as tasting bad or bland in general.
In Germany, a special permit was required until the 1990s to produce certain types of tofu. If you offer people something with tofu, many still turn up their noses or laugh because they think you're joking. I don't notice this as much with any other widely available food.
There is also far too much discussion about whether something can be called tofu sausage, tofu burger or tofu butter. But I think here we've passed the low point and common sense is slowly gaining ground.
Sometimes you still come across the false claims that tofu raises estrogen levels and that the rainforest is cut down to produce it.